From 54606e494a5df63bc4a96cff17cac9133ebf22f3 Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Sat, 5 Apr 2014 16:34:37 +0400
Subject: [PATCH] Fixed STM32 Event

---
 libuavcan_drivers/stm32/driver/src/uc_stm32_thread.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/libuavcan_drivers/stm32/driver/src/uc_stm32_thread.cpp b/libuavcan_drivers/stm32/driver/src/uc_stm32_thread.cpp
index 374f1cf4b0..0c94044249 100644
--- a/libuavcan_drivers/stm32/driver/src/uc_stm32_thread.cpp
+++ b/libuavcan_drivers/stm32/driver/src/uc_stm32_thread.cpp
@@ -13,14 +13,18 @@ namespace uavcan_stm32
  */
 bool Event::wait(uavcan::MonotonicDuration duration)
 {
+    static const uavcan::int64_t MaxDelayMSec = 0x000FFFFF;
+
+    const uavcan::int64_t msec = duration.toMSec();
     msg_t ret = msg_t();
-    if (!duration.isPositive())
+
+    if (msec <= 0)
     {
-        sem_.waitTimeout(TIME_IMMEDIATE);
+        ret = sem_.waitTimeout(TIME_IMMEDIATE);
     }
     else
     {
-        sem_.waitTimeout(MS2ST(duration.toMSec()));
+        ret = sem_.waitTimeout((msec > MaxDelayMSec) ? MS2ST(MaxDelayMSec) : MS2ST(msec));
     }
     return ret == RDY_OK;
 }